Annealing pot



R. B1. POGUE ANNEALING POT July 1, 1930.

Filed Feb. 25. 1929 1 7. J j .1 J., a .y L l@ 11 Il J 1 if 7 numW 1 Patentedauly 1,1930 'i ROBERT B. ',POGUE, onoHrcAGO,l ILLiivoisQv-assienoaao .AMERICAN v sii-OE a FOUNDRY COMPANY, or,kwitiqiinarongnniiawaan;.A vconronafrreivFo'n heat to which theyare subjected.,

:DELAWARE l y .arrivantriverv roar4 i "Appiieatiqngaiea February 2:,.ieaa-fseria1 110,342,631,

This invention relatesfrto annealing pots nei: providing tliejseats i and it has for itsjobject to prolong thelifeof the pot and to prevent the sides and ends thereof'from bulging and otherwise deforming dueto the Weightof the loaded pots When piled oneupon the other in ypractice andto the Another object of thefinvention is to provide each pot withv means at its corners for receiving the load and foifrelieviiig the sides and ends of the pot from excessive pressures and strains. Y j y' Another object of the invention is toV provide means at the corners ofy a pot forfcarryving the load off superposed pots and for` strengthening the corners to withstand 'the loads to Whichthey may be subjected.

And a further object of theinvention is to reinforce and strengthen the bottoin of the pot to withstand the loads to Which it issubjected in practice. 1

In the accompanying dravvingxl have illustrated selected embodiments of the invention and, referring thereto. Y 1 j Fig. l is a longitudinal sectional view on the line l-1 of Fig. 2. j i

Fig. 2 is a top plan vievv.k 7

Fig. 3 is a transverse sectional View line of Fig.v 2. A'

Fig. 4 shows a'modified construction. ,e

Fig. 5 is a longitudinal sectional vievv showing the bottom of riorly.

Fig. 6 is a detail plan vieiv. j j

Referring to thedravvingaithe pot 7 may he rectangular in shape with rounded corners, as illustrated, and provided with a seat 8 at on the itstop with asurrounding flange 9 to receive v the bottom of a superposed pot when a plu-1-` rality of pots are arranged in a staclrin an v annealing Oven, according to regular practice. It has been found that annez'ilingl pots bulge at their sides and to a less extent at their ends during the annealingtreatment Whichis dueto the great Weight of the pots and their contents in the stack and to the heat to v vhich they are subjected.'4 I have found that this can be overcome by ari'angingto carry the Weight upon the corners of thepots and this can be acoinjnfshed @simple and 'effective man1 the body reinforced inte,Y

' Aends,and.onefor more Aribs maybe-connected 1,2, 3., 5 and f 6, atthe .Coirl'erssuificiently higherfthanthe seats to A,supporta superposed the pot 'and 'at the' corners 'thereof as shoivn they vmay be made of any height suitable for *the `piirposeoif. carrying the Weight of superfposedfpots some casesit may be desirable .to reinforce and strengthen fthe corners of'l the pots lbyr'"einbedding vertically disposed .rods l2fthere'in` The ,pots are" `usually made y'of 'White ca st `iron and the rods vshouldbe ina-de inginetal.

"POlBII'trely clear of the seat betfvveenffthe stepsgor 'by providing steps 1l onthe"bottomi` i of alloy steel Vor other substantial heatjresi-st-- f l In 'actual practice, the bottom of ,a

'is I"subjected, to. severe treatment `and 4fre-l Vqiien'tl`y cracks and breaks down rendering the pot useless. lVarious,efforts have beeny inadeto reinforcefandstrengthen the ,pot boty tom by vthe provisioiiiof outside ribs or ^lthe like, but I have .found that much better resuits may" be obtainedfby ,providing interior Htapering ribs 13 which extend part. Wayacross thebottom ofthepot from the sidesfoijfends and are Widest at the ,sideso'renda These ribs :may be :arranged in any desired manner onqlthe bottoniof the pot vextendingi-fronithe 'sides orfrom theends, or from the sidesa-nd away at their other ends inthe bottom of the The improvements herein described are simple in character but they are of substan? tial importance because they have been foundv iny actual practice to prolong the lifeof a pot materially. rAnnealing pots are subjected' to rough `usage and severe action by `l heat and flames. They are heavily loaded andare stacked three or more pots high so -K that the lower pots carry heavy loads. The

result has, been that thel sides and the @wie sov butpartcularly the sides, of the p ots bulge j l outwardly and are y thereby sub]ected to n i strainswhich cause cracks and such damage to'the pots that they are rendered `unfit for further use. By arranging to carry the load A,at thecorners of the pot the bulging of the sides and ends hasbeen materially reduced Vand practically eliminated, 'and the lifeof the pot has thereby been prolongedfrepresenting an virrip'ortant economical saving. While I do not consider theembjeddedrods essential, I do believe they will reinforce and strengthen the corners of the pot and assist in prolonging the life ofthe pot.

`I have shown and describedthe invention Aas applied to asubstantially rectangular pot, which is the shape commonly used, but I do .i

not limitH the invention Atov pots ofthis shape because it, will be lapparent that it may be satisfactorilyused' inupots of other shapes,

and'I reserve the right to `make vsuch changes andjallotherchanges lthat may be `found desirable iwithin claims I claim:

i ljAn annealing pot having a seat at-the topthereof and elevated vsteps spaced apartY plane of the seat and being adapted to re- `ceive and 'support Va superimposed pot, yand Lll) a flange surrounding 'said seat and said steps. 5'

2. An annealing pot .having a seat' within the body thereof and elevated reenforcing l steps on the seat'at the corners of the body,

said steps supporting a superimposed pot thereon entirelyclear ofthe seat between the n steps.`

c 3. An annealing pot having steps spaced vabout its upright walls' to carry the Weight of superposed pots, and reinforcing rodsembedded in the upright wallsof the pot at said stepsy and extending from top to bottom of the `,said walls and into'the steps. Y

Il. An annealing pot having interior tapering ribs on its bottom, saidl ribsV being widest at the uprightv Walls of the pot and ltapering therefrom. a 1 1.

5. An annealing pot having interior tapere ing ribs on its bottom within the same, said ribs curving up the sides and ends of the pot VVand merging therewith. y i

- ROBERT B PGUE.

the scope of the following..v

on said seat adjacent the corners, said steps s beingUdisposedvin a plane Vhigher than'the i 

